Clean Tech Nation: How the U.S. Can Lead in the New Global Economy is a 2012 book written by Ron Pernick and Clint Wilder. The book surveys the expansion of clean technology and renewable energy over the past decade. It tracks the growth of wind power and solar photovoltaics and shows that these markets grew 20 fold from 2000 to 2010. Factors which are driving the global expansion of clean tech are identified, as are the new economic opportunities which are being created.